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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: Câu 5. Phân tích đa thức 4x4+1 thành nhân tử ta được A.(2x2-2x-1)(2x2​​​​​​​+2x+1) B.(2x2-2x+1)(2x2​​​​​​​+2x-1) C.(2x2-2x+1)(2x2​​​​​​​+2x+1) D.(2x2​​​​​​​+1)​​​​​​​2 { "@context": "https://schema.org", "@type": "QAPage", ...

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Toán Lớp 4: tính nhanh:2/7x1/5+2/7x3/10+1/2x2/7 136x75+136x19+5x136+136 1/2+1/4+1/8+..............+1/64+1/128+1/126 1/1x2+1/2x3+1/3x4+1/4x5+.........+1/99x100 2x2/4+2/4x6+2/6x8+........+2/98x100 2/1x3+2/3x5+2/5x7+.......+2/97x99 { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": ...

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